The area of a trapezium is 475 cm square and the .. -Maths 9th

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Let AB = x cm    ∴ DC = x + 4  Area of trapezium ABCD = 1/2(AB + DC)AL 475 = 1/2(x + x + 4) x 19 950 = (2x + 4)19    ⇒ 38x + 76 = 950 ⇒  38x = 950 - 76   ⇒ x = 874/38   ⇒ x = 23 ∴  Sides of trapezium are 23, 23 + 4    i.e., 23 cm, 27 cm

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